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https://issues.apache.org/jira/browse/HBASE-16981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15674688#comment-15674688
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huaxiang sun commented on HBASE-16981:
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Thanks [~jingcheng...@intel.com] and [~anoop.hbase], very good points. I will
create the first draft based on your comments. The one point I want to add is
the major mob compact. Major compact will do something I implement today. Some
use cases I am aware of is that mob compaction chore is disabled, the major mob
compaction is manually scheduled to reduce the number of the mob files.
> Expand Mob Compaction Partition policy from daily to weekly, monthly and
> beyond
> -------------------------------------------------------------------------------
>
> Key: HBASE-16981
> URL: https://issues.apache.org/jira/browse/HBASE-16981
> Project: HBase
> Issue Type: New Feature
> Components: mob
> Affects Versions: 2.0.0
> Reporter: huaxiang sun
> Assignee: huaxiang sun
> Attachments: HBASE-16981.master.001.patch,
> HBASE-16981.master.002.patch,
> Supportingweeklyandmonthlymobcompactionpartitionpolicyinhbase.pdf
>
>
> Today the mob region holds all mob files for all regions. With daily
> partition mob compaction policy, after major mob compaction, there is still
> one file per region daily. Given there is 365 days in one year, at least 365
> files per region. Since HDFS has limitation for number of files under one
> folder, this is not going to scale if there are lots of regions. To reduce
> mob file number, we want to introduce other partition policies such as
> weekly, monthly to compact mob files within one week or month into one file.
> This jira is create to track this effort.
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